Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
thieu sang » chieu sang, thieu khang, thieu quang
trong phat » trong thuat, trong nha, trong hoat
phat thong » phap thong, phan thong, nhat thuong
hoc thieu » toc thieu, hoc hien
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sang - thanh trong phat thong ((cong dan) or (cong tan)) ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh trong phat thong ((cong dan) OR (cong tan)) ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh trong phat thong ((cong dan) or (cong tan)) ((toan cau) or (toan ban))*.